Machine for making concrete slabs.



0. D; TEGABDEN. MACHINE FOR MAKING CONCRETE sLABs. APPLIOATION FILED JAN.26, 1907.

903,91 6. Patented Nov. 17, 1908.

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051). TEGA'RDEN. MACHINE FOR MAKING CONCRETE SLABS. AIPLIOATION FILED JAN. 26, 1907.

903,91 6. Patented Nov. 17, 1908.

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O. D'. TEGARDEN. MACHINE FOR MAKING CONCRETE SLABS. APPLICATION FILED JAN.26, 1907.

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ORA DELMER TEGARDEN, OF NASHVILLE, TENNESSEE, ASSIGNOR OF ONE-HALF TO S. R. TEGARDEN, OF COLUMBIA, TENNESSEE.

MACHINE FOR MAKING CONCRETE SLABS.

Specification of Letters Patent.

Patented Nov. 17, 1908.

To all whom it may concern:

Be it known that I, ORA DELMER TEGAR- DEN, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented a new and useful Improvement in Machines for Making Concrete Slabs, of which the following is a specification.

This invention relates to a concrete machine for molding vaults intended to be set up in graves to receive coffins, and hermetically sealed after the coffin has been placed therein, thus forming an air tight and water proof concrete vault with each grave.

A further object of the invention is to construct said vaults in slabs or sections readily handled by two men, thus reducing the labor and expense of placing them in position.

A further object of the invention is a machine of this kind which will construct slabs of varying thickness, and from which the slabs may be readily removed.

The invention consists of the novel features of construction, hereinafter fully described, pointed out in the claim and shown in the accompanying drawings, in which,

Figure l is a perspective view of my machine in use. Fig. 9. is a side elevation of the machine, opened and swung into position for the removal of a slab. Fig. 3 is a transverse section taken through the machine during the formation of a slab, the machine being closed and a slab being shown therein in section. Fig. 4 is a transverse sec tion through the machine, the machine being openedfor removal of the slab. Fig. 5 is a longitudinal section through an end portion of the mold showing the manner of making end slabs for the vault. Fig. 6 is a perspective view showing a portion of an end slab framed, said frame being shown in elevation in Fig. 5. Fig. 7 is a side elevation of front board. Fig. 8 is a perspective view of the complete vault, a top being shown detached.

In constructing my machine I provide a low frame A open at the front and having bearings A formed in its end and I provide the bottom board or base B, which is provided at each end with trunnions B which rest in the bearings A of the frame A so that the base B can be tilted.

The frame A at its rear corners is provided with braces A which also serve as supports for the rear corners of the base B. The base can therefore be tilted downwardly in a forward direction only, and when lifted into a horizontal position rest upon the braces A The front marginal portion of the base B is provided with a plurality of slots B the remaining portion of the base being solid.

A back C is hinged to the rear edge of the base B as shown at C and end pieces E are removably hinged to the ends of the back C. A front board D is provided along its lower edge with a plurality of depending perforated pins D, which pins are adapted to engage and pass through the slots B The front board D may be adjusted with respect to the back C by arranging it so that the pins D will engage the proper slots B and can be locked in its adjusted position by inserting any suitable locking means in the perforations of the pins D, as for example, plugs or nails or any small article of suit able size which may be at hand. I also provide a pallet F which has a smooth inner surface but which upon its outer face is provided with a plurality of transverse ribs F which space the pallet when placed within the mold from the front board D. I also prefer to cut the front board D out as shown at D which makes it much lighter and easier to handle. In order to rabbet the edges of the slab to be formed, I place upon the base board B an angled block G and at each end of the mold I place upright similar angled blocks H. In order to manufacture the proper end slabs I use a frame J open at the top formed also of angled blocks as shown in Figs. 5 and 6.

The ends E are provided with suitable hooks K, which engage eyes K carried by the front D. The ends E are necessarily detachable from the back C in order that end pieces of different widths may be used as the front board is adjusted nearer to or farther from the back C, thus changing the width of the mold. 4

In order to rabbet the upper edge of the slab a rectangular bar of iron L is laid upon the top of the slab parallel to the pallet F, the top of the iron bar L lying flush with the upper edge of the pallet F as shown in Figs. 1 and 3.

The operation of the machine is as follows :The front piece D is adjusted and is locked to the ends E, the blocks G and H are placed in position, the former in the bottom of the mold and the two latter at the ends and the concrete is then poured in and tamped in the usual manner. The operation is completed by placing the bar L in position and filling in and tamping around it. As soon as the concrete has set the hooks K are disengaged from the eyes K and the ends swung open. The base B is tilted forward and downward, the base swinging into a substantially vertical position. This movement will bring the front D into a substantially horizontal position with the pallet F resting thereupon. The pallet can then be readily removed from the board D and set upon a suitable platform or conveyed to a suitable kiln for the drying or curing of the slab.

It will be understood that a number of pallets are provided as is customary with concrete block machines. In Fig. 8 I have shown a vault M, with a cover slab M lifted, the said vault being constructed of slabs manufactured in the machine above described.

Having thus fully described my invention, what I claim as new and desire to protect by Letters Patent, is':-'

A machine of the kind described comprising a low rectangular frame open at the front, rear corner braces carried by the frame, a base pivotally mounted on the ends of the frame and resting upon said braces, said base being slotted adjacent its front edge, a back hinged to the rear edge of the base, end plates cletachably hinged to ends of the back, a front board, pins carried by the lower edge of the front board and engaging the perforations of the base, apallet having a smooth inner face and provided with ribs spacing it from the front board, and angled blocks arranged upon the base and at the ends of the mold, as and for the purpose set forth.

ORA DELMER TEGARDEN.

Witnesses:

H. D. BULLARD, W. F. Emerson. 

